Apparently quite a few other makes use the same 5-130 bolt pattern, but finding the correct offsets may be more problematic. Offsets greater than Porsche OEM can sometimes be made to fit with corrective wheel spacers. OEM Porsche wheels and aftermarket wheels built specifically for Porsches are the safer way to go.
AFAIK Porsche 5x130mm bolt pattern is only shared with the following vehicles.
VW toureg because it is a Cayenne
I don't know of any others... please share if you do.
Again as previously said the offset would need to be correct as well.
I found a few that were the same (5x130)...well actually my local tire shop did. I beleive there were quite a few VW series, Audi's and I think one Jap Maker...
EDIT[not Jap, but Italian?...damn I can't remember it has been a few years, sorry]
Ask your tire retalier to look up the bolt pattern and it should show various makes and models.
The newest VWs have 5x112. Mk IV Golfs and Jettas and VR6 cars from the 90s had 5x100. 4-cyl front engine cars were 4x100. Early pre-68 air-cooled cars had a "wide-5" 5x130 pattern which was adopted by the 356 which was obviously based on the Beetle. The only modern VWs that would share the 5x130 pattern would be the Touareg and Audi Q7. Even Audis have 5x112. In order to fit a Porsche wheel on a VW is to use an adaptor like I have done on my New Beetle.
Useless background re the "Porsche tax." When new Porsches were 356s, quite a few parts were shared with the VW beetle. The shared parts came in both VW parts numbers and Porsche parts numbers, so the original "Porsche tax" was the difference in price. Those who knew which parts were shared could save money by buying the VW parts for their 356. Porsche/VW dealers (or any mechanic for that matter) could also install VW parts and charge customers for Porsche parts; not that they would do such a thing.
"Porsche Tax" applies to more than Porsche's. I had a '67 Fiat Dino (Formula II Ferrari Dino engine). It needed a water pump bearing replaced. To my horror the shop ordered the part through a local Ferrari dealership - $750. The same part through a Fiat parts source was $130. (Just as there used to be cross reference books that let you see which parts from other GM cars fit Cadillac's -- for a much lower price.)